Hi,
Yes, For ui5, you need to activate business functions for UI5.
The functionalities that you want is present in EHP6 as well. To configure ehp6 based MSS application, do below steps.
1) Copy portal role from pcd path pcd:portal_content/com.sap.pct/line_manager/com.sap.pct.addon.mss.PACKAGEMSS i.e. Add-on for manager self service package.
2) Paste it in folder 100.
3) Open the role and for each and every iview put system alias pointing to R/3 client 100.Do not change alias of OBN portal object.
4) Assign this portal role to end user in r/3 client 100. To assign this role to end user you can go to User admin role and assign the portal role. Ensure that backend portal role is assigned in R/3 client 100(Required for authorization)
5)Change alias in LPD_CUST for MSS menu.
6)Login using this end user id and click on link.
Now let me know the end result.
The standard EHP6 MSS role should look like this.
Reagrds,
Navya