You can Stack with Xverse wallet by going into the “Earn” tab in the app and choosing the Xverse pool option. You will be joining thousands of other pool users to receive Bitcoin rewards for participating in proof-of-transfer consensus. You can stack whenever you want.
The pool will only lock right before the start of the next cycle. You have to be stacked before a cycle begins to receive rewards for that particular cycle.
You can now also participate in Stacking via the web-based Xverse pool here: https://pool.xverse.app/