For accor, you have to take membership A+, for 20 nights and rest through nights or platinum through status points.
Or you can take ALL plus ibis and ALL plus voyager for combined 30 nights and rest through stays
or take ALL signature absolute for 12000 status point plus 75k accor points per year. Rest you will have to generate through revenue nights
In Marriott convoy, you may request the customer care for Marriott bombay status challenge for gold or platinum elite status. If approved then within 90 days you are expected to complete a certain number of revenue stays with them say 10 stays for gold elite or 20 stays for platinum elite. They may or ay not offer this challenge to you