In its pure form, it was not necessary to meet the functionality of changing the names of the stages, but there is still a solution, though you will need to use the procedures
For this it is necessary
1. create stages with the names you want, for example
"Performance"
2. create a procedure that will be called "Take to work", and configured as follows
- in the procedure parameters in the field "Display procedures only at selected stages"
http://prntscr.com/ufigci specify the stages from which you can switch to the "Execution" stage
- set the action that will carry out the transition to the "Execution" stage, for example, the action "Instant jump to the stage"
As a result, you should get
1. a set of stages, the names of which in their pure form reflect the state of the process
2. a set of buttons that will initiate the transition of the process from one state to another.