Combine Parameters in Google Data Studio

Question

I have 3 different parameter sets for calculating Goals in percentage but all 3 have common labels. I basically want to combine these 3 parameter sets into one set so it will be easy for me to filter while using Dashboard.

Here is the dashboard: https://datastudio.google.com/u/0/reporting/eec5311e-5edf-4c82-8d5b-0c3d387e7b56/page/QHznC/edit

Region Leads, Region MQLs and Region SQLs are parameters which I have created and they help me in calculating goals. The labels for them are same but they contain different numerical values based on goals to attain.

Here is the spreadsheet: https://docs.google.com/spreadsheets/d/1Jc3T5S0EqblsEb61-z_7XQuwH0qq2Ccrm0FFv66KqGY/edit#gid=0 I tried using CASE WHEN query but it did not work from my side. Please help! Thanks in advance!