diff --git a/src/Cov19_life_cycle/cov19_life_cycle.heta b/src/Cov19_life_cycle/cov19_life_cycle.heta
index 27b7944..f2e0c06 100644
--- a/src/Cov19_life_cycle/cov19_life_cycle.heta
+++ b/src/Cov19_life_cycle/cov19_life_cycle.heta
@@ -15,8 +15,6 @@ include ./cov19_life_cycle.xlsx type xlsx with { sheet: 4, omitRows: 3 }
 // @Reaction
 include ./cov19_life_cycle.xlsx type xlsx with { sheet: 5, omitRows: 3 }
 
-// include addon.json type json
-
 // exports
 output_sbml @SBMLExport {
   filepath: cov19_life_cycle_sbml,
diff --git a/src/Cov19_life_cycle/index.heta b/src/Cov19_life_cycle/index.heta
new file mode 100644
index 0000000..76c427a
--- /dev/null
+++ b/src/Cov19_life_cycle/index.heta
@@ -0,0 +1,14 @@
+/*
+  Entry point for using this module as part of integrated model
+*/
+
+// @Const
+include ./cov19_life_cycle.xlsx type xlsx with { sheet: 1, omitRows: 3 }
+// @Record
+include ./cov19_life_cycle.xlsx type xlsx with { sheet: 2, omitRows: 3 }
+// @Compartment
+include ./cov19_life_cycle.xlsx type xlsx with { sheet: 3, omitRows: 3 }
+// @Species
+include ./cov19_life_cycle.xlsx type xlsx with { sheet: 4, omitRows: 3 }
+// @Reaction
+include ./cov19_life_cycle.xlsx type xlsx with { sheet: 5, omitRows: 3 }
diff --git a/src/index.heta b/src/index.heta
index f3bf3a9..3d349ca 100644
--- a/src/index.heta
+++ b/src/index.heta
@@ -3,7 +3,10 @@
   entry point for whole platform
 */
 
-include ./Cov19_life_cycle/cov19_life_cycle.heta
+// include units
+include ./qsp-units.heta
+// include life cycle module
+include ./Cov19_life_cycle/index.heta
 
 // exports
 out_sbml @SBMLExport {
@@ -32,5 +35,13 @@ out_mrg @MatlabExport {
   filepath: covid19_integrated_matlab
 };
 
-//output_yaml @YAMLExport { filepath: output };
-//output_xlsx @XLSXExport { filepath: cov19_life_cycle_xlsx, omitRows: 3, splitByClass: true };
+/*
+output_yaml @YAMLExport {
+  filepath: output
+};
+output_xlsx @XLSXExport {
+  filepath: cov19_life_cycle_xlsx,
+  omitRows: 3,
+  splitByClass: true
+};
+*/