Service charge switch on off to 15%

V5 Question
1

This system already has a service fee of 13.5%, but my customer needs to add an additional service fee of 15% for a key, such as the on key. On is 15%, and off is the original 13.5%. Can experts teach me how to set it? Thank you.

2

What do you mean by key? Is that some sort of button service staff will press?

If I understood correctly, its either 13.5% OR 15%, it is not 13.5% + 15%?

3

Added the on off button for 15% ,if off back to normal 13.5% service charge

4

Id set a Ticket Tag with service charge.
And then use this value to apply this rate to Update Calculation action in your rules.

  1. Set Ticket Tag (on ticket created or something)
    1.1. Ticket Tag Name : SCRate
    1.2. Ticket Tag Value : 13.5

  2. Automation Command Executed (15% Rate)
    2.1. Ticket Tag Name : SCRate
    2.2. Ticket Tag Value : 15
    Update Ticket Calculation
    2.3. Calculation Type : Service Charge
    2.4. Calculation Amount : {TICKET TAG:SCRate}

  3. Ticket Total Changed Rule
    Update Ticket Calculation
    3.1. Calculation Type : Service Charge
    3.2. Calculation Amount : {TICKET TAG:SCRate}