Update INSTALL.md

INSTALL.md

@@ -64,6 +64,27 @@ Notice the userPassword is invalid, let's set a proper one
 ```
 root@example:/# ldappasswd -x -D cn=admin,dc=example,dc=com -w admin -s qwerty uid=marisa,ou=people,dc=example,dc=com
 ```
+
+## _3- Load and enable policies module_
+
+Write the .ldif file and load the ppolicy.so module that comes with Debian libraries
+```
+root@example:/# cat > modify_ppolicy_module.ldif << 'EOF'
+dn: cn=module{0},cn=config
+changetype: modify
+add: olcModuleLoad
+olcModuleLoad: ppolicy.so
+EOF`
+```
+```
+ldapmodify -Q -Y EXTERNAL -H ldapi:/// -f modify_ppolicy_module.ldif
+```
+Restart slapd to load the module (copy and paste the following as a single line)
+```
+root@example:/etc/ldap/certs# slapd -h "ldap:/// ldapi:/// ldaps:///" -u openldap -g openldap &
+sleep 3
+```
+
 <!--
 Generate a password hash for our administrator user, Op3nLd4p! here being the password to comply with password policies
 ```