This is essentially identical to the Percentage Staking Plan used with Backing bets.
 
There is one rule that is followed - The stake used is a % of the cumulative bank. For instance, for a start bank of £2000 you would maybe use 2% of your bank making the stake £40. Your next bet would be 2% of whatever the next cumulative bank total now is.
In TSM there is are options to use a ratchet mode and to use the Last Bet filter to tell TSM when recalculate stakes.
Lay Percentage Settings

Windows Desktop TSM Version 6.0

Evaluation version of TSM is restricted to 10 bets at any one time. No time restrictions in place. 

Web Based Version - TSMapp 5.8

Login as Demo User. Restriction of 10 bets at any one time.