Activity Clean Up

Say you have made a payment for many people and someone pays you back with a direct bank transfer. I would like it if you could assign a payment and say it was a part of an outgoing.

For example. I purchase some tickets for 5 people for £150. So £30 each. Someone sends me £30 direct not using a split bill link. I would like to be able to move this payment as if it was. To tidy up the activity log and group money coming in and out a bit better