click the link and change the number at the end of the the url to 0.000000%20vests.
It's daily. I think it's near midnight EST or 0700 UTC.
You don't need to cancel delegations. If you're at 50 and you want to delegate a 100 instead simply click the 100SP delegation. If you want go to 1k click that, if you want to come back to 50 click that. It's not additive it just takes the last value you use.
oh got it thanks helps a lot. I am still pretty new with all this and learning as I go some days I consume more THC then others so I tend to get confused at times.