diff --git a/README.md b/README.md
index f3d4aa4..b312ec0 100644
--- a/README.md
+++ b/README.md
@@ -116,8 +116,10 @@ $ ls -l cromwell.out*
 $ caper hpc abort [JOB_ID]
 ```
 
+## Customize resource parameters on HPCs
+
+If default settings of Caper does not work with your HPC, then see [this document](docs/resource_param.md) to manually customize resource command line (e.g. `sbatch ... [YOUR_CUSTOM_PARAMETER]`) for your chosen backend.
 
 # DETAILS
 
 See [details](DETAILS.md).
-
diff --git a/caper/__init__.py b/caper/__init__.py
index dd38127..598fbd4 100644
--- a/caper/__init__.py
+++ b/caper/__init__.py
@@ -2,4 +2,4 @@
 from .caper_runner import CaperRunner
 
 __all__ = ['CaperClient', 'CaperClientSubmit', 'CaperRunner']
-__version__ = '2.2.2'
+__version__ = '2.2.3'
diff --git a/caper/caper_init.py b/caper/caper_init.py
index 37c151e..656f1b3 100644
--- a/caper/caper_init.py
+++ b/caper/caper_init.py
@@ -37,54 +37,15 @@
 # It is not recommended to change it unless your cluster has custom resource settings.
 # See https://github.com/ENCODE-DCC/caper/blob/master/docs/resource_param.md for details."""
 
-CONF_CONTENTS_SLURM_PARAM = """
-# This parameter defines resource parameters for Caper's leader job only.
-slurm-leader-job-resource-param={slurm_leader_job_resource_param}
-{help_context}
-slurm-resource-param={slurm_resource_param}
-""".format(
-    help_context=CONF_CONTENTS_COMMON_RESOURCE_PARAM_HELP,
-    slurm_resource_param=CromwellBackendSlurm.DEFAULT_SLURM_RESOURCE_PARAM,
-    slurm_leader_job_resource_param=' '.join(SlurmWrapper.DEFAULT_LEADER_JOB_RESOURCE_PARAM),
-)
-
+CONF_CONTENTS_SLURM_PARAM = ""
 CONF_CONTENTS_SGE_PARAM = """
-# This parameter defines resource parameters for Caper's leader job only.
-sge-leader-job-resource-param={sge_leader_job_resource_param}
-
 # Parallel environment of SGE:
 # Find one with `$ qconf -spl` or ask you admin to add one if not exists.
-# If your cluster works without PE then edit the below sge-resource-param
 sge-pe=
-{help_context}
-sge-resource-param={sge_resource_param}
-""".format(
-    help_context=CONF_CONTENTS_COMMON_RESOURCE_PARAM_HELP,
-    sge_resource_param=CromwellBackendSge.DEFAULT_SGE_RESOURCE_PARAM,
-    sge_leader_job_resource_param=' '.join(SgeWrapper.DEFAULT_LEADER_JOB_RESOURCE_PARAM),
-)
-
-CONF_CONTENTS_PBS_PARAM = """
-# This parameter defines resource parameters for Caper's leader job only.
-pbs-leader-job-resource-param={pbs_leader_job_resource_param}
-{help_context}
-pbs-resource-param={pbs_resource_param}
-""".format(
-    help_context=CONF_CONTENTS_COMMON_RESOURCE_PARAM_HELP,
-    pbs_resource_param=CromwellBackendPbs.DEFAULT_PBS_RESOURCE_PARAM,
-    pbs_leader_job_resource_param=' '.join(PbsWrapper.DEFAULT_LEADER_JOB_RESOURCE_PARAM),
-)
+"""
 
-CONF_CONTENTS_LSF_PARAM = """
-# This parameter defines resource parameters for Caper's leader job only.
-lsf-leader-job-resource-param={lsf_leader_job_resource_param}
-{help_context}
-lsf-resource-param={lsf_resource_param}
-""".format(
-    help_context=CONF_CONTENTS_COMMON_RESOURCE_PARAM_HELP,
-    lsf_resource_param=CromwellBackendLsf.DEFAULT_LSF_RESOURCE_PARAM,
-    lsf_leader_job_resource_param=' '.join(LsfWrapper.DEFAULT_LEADER_JOB_RESOURCE_PARAM),
-)
+CONF_CONTENTS_PBS_PARAM = ""
+CONF_CONTENTS_LSF_PARAM = ""
 
 DEFAULT_CONF_CONTENTS_LOCAL = (
     """backend=local
@@ -109,10 +70,6 @@
 
 DEFAULT_CONF_CONTENTS_SGE = (
     """backend=sge
-
-# Parallel environement is required, ask your administrator to create one
-# If your cluster doesn't support PE then edit 'sge-resource-param'
-# to fit your cluster's configuration.
 """
     + CONF_CONTENTS_TMP_DIR
     + CONF_CONTENTS_SGE_PARAM
diff --git a/docs/resource_param.md b/docs/resource_param.md
index 146ffaf..be45a41 100644
--- a/docs/resource_param.md
+++ b/docs/resource_param.md
@@ -10,3 +10,65 @@ You can use Cromwell's built-in variables (attributes defined in WDL task's runt
  defined in WDL task's runtime
 - `time`: Time limit for a job in hour
 - `gpu`: Specified gpu name or number of gpus (it's declared as String)
+
+# How to configure resource parameters on HPCs
+
+Open `~/.caper/default.conf` with a text editor and add the following code lines according to your HPC type. Following commented instructions to customize resource parameters of HPC's submit/monitor/delete commands.
+
+## SLURM
+
+```ini
+# This parameter defines resource parameters for Caper's leader job only.
+slurm-leader-job-resource-param=-t 48:00:00 --mem 4G
+
+# This parameter defines resource parameters for submitting WDL task to job engine.
+# It is for HPC backends only (slurm, sge, pbs and lsf).
+# It is not recommended to change it unless your cluster has custom resource settings.
+# See https://github.com/ENCODE-DCC/caper/blob/master/docs/resource_param.md for details.
+slurm-resource-param=-n 1 --ntasks-per-node=1 --cpus-per-task=${cpu} ${if defined(memory_mb) then "--mem=" else ""}${memory_mb}${if defined(memory_mb) then "M" else ""} ${if defined(time) then "--time=" else ""}${time*60} ${if defined(gpu) then "--gres=gpu:" else ""}${gpu} 
+
+```
+
+## SGE
+
+```ini
+# This parameter defines resource parameters for Caper's leader job only.
+sge-leader-job-resource-param=-l h_rt=48:00:00,h_vmem=4G
+
+# Parallel environment of SGE:
+# Find one with `$ qconf -spl` or ask you admin to add one if not exists.
+# If your cluster works without PE then edit the below sge-resource-param
+sge-pe=
+
+# This parameter defines resource parameters for submitting WDL task to job engine.
+# It is for HPC backends only (slurm, sge, pbs and lsf).
+# It is not recommended to change it unless your cluster has custom resource settings.
+# See https://github.com/ENCODE-DCC/caper/blob/master/docs/resource_param.md for details.
+sge-resource-param=${if cpu > 1 then "-pe " + sge_pe + " " else ""} ${if cpu > 1 then cpu else ""} ${true="-l h_vmem=$(expr " false="" defined(memory_mb)}${memory_mb}${true=" / " false="" defined(memory_mb)}${if defined(memory_mb) then cpu else ""}${true=")m" false="" defined(memory_mb)} ${true="-l s_vmem=$(expr " false="" defined(memory_mb)}${memory_mb}${true=" / " false="" defined(memory_mb)}${if defined(memory_mb) then cpu else ""}${true=")m" false="" defined(memory_mb)} ${"-l h_rt=" + time + ":00:00"} ${"-l s_rt=" + time + ":00:00"} ${"-l gpu=" + gpu} 
+```
+
+## PBS
+
+```ini
+# This parameter defines resource parameters for Caper's leader job only.
+pbs-leader-job-resource-param=-l walltime=48:00:00,mem=4gb
+
+# This parameter defines resource parameters for submitting WDL task to job engine.
+# It is for HPC backends only (slurm, sge, pbs and lsf).
+# It is not recommended to change it unless your cluster has custom resource settings.
+# See https://github.com/ENCODE-DCC/caper/blob/master/docs/resource_param.md for details.
+pbs-resource-param=${"-lnodes=1:ppn=" + cpu}${if defined(gpu) then ":gpus=" + gpu else ""} ${if defined(memory_mb) then "-l mem=" else ""}${memory_mb}${if defined(memory_mb) then "mb" else ""} ${"-lwalltime=" + time + ":0:0"} 
+```
+
+## LSF
+
+```ini
+# This parameter defines resource parameters for Caper's leader job only.
+lsf-leader-job-resource-param=-W 2880 -M 4g
+
+# This parameter defines resource parameters for submitting WDL task to job engine.
+# It is for HPC backends only (slurm, sge, pbs and lsf).
+# It is not recommended to change it unless your cluster has custom resource settings.
+# See https://github.com/ENCODE-DCC/caper/blob/master/docs/resource_param.md for details.
+lsf-resource-param=${"-n " + cpu} ${if defined(gpu) then "-gpu " + gpu else ""} ${if defined(memory_mb) then "-M " else ""}${memory_mb}${if defined(memory_mb) then "m" else ""} ${"-W " + 60*time} 
+```