Add a swap between two peoplean expense to be charged communally

Step 1: who's incurred the expense (if multiple people paid, use the split expense form)?

Step 2: how much is it?

negative values transfer funds from the account in Step 1
(this is also the account to which a drain applies)

Step 3: when was it incurred (enter as dd/mm/yy or 'today', 'last Friday', etc.)?

Step 4: who's got to paywhat was it for (if multiple categories apply, use the split expense form; if none is suitable, add a Transaction Group instead)?

Step 5: what's it forany more specific details?