add amount pay rates

It would be great if I could add amounts rather than type manual entries into pay rate or select existing pay rates.

For example on weekends we pay additionally - I would like to put +$.50 or +$1.50 in addition to their standard pay rate as the pay rate rather than a customer number. That way I could do this for all employees regardless of different rates.

Also for certain clients I'd like to pay employees +$X more for working with a client who is farther away. Rather than put every single employee in with custom rates, I'd like to say +$2 on the pay rate above their standard rate.

Then when I make an update for employees - pay raises, etc - I don't have to go all through the system and make manual changes to standard rate, weekend rate, special pay locations, etc.

Also - Travel time - it would be good to be able to select their standard rate (same reason - be able to update their standard rate and that impact all additional locations where this is).