It can sort of be done, but it is sloppy and does not work with the donation subsystem. We did it for an event. We created the registration form. We then added a series of payment check boxes so the amounts get added in.
So
Checkbox $25
Checkbox $50
Checkbox $75
Checkbox $100
Checkbox $200
etc.
So if a person wanted to donate say $150 they would check the $100 and $50 boxes.
I have not tried this on the membership form, but you should be able to use the field selection type "extra charges - multiple choice" to effect this.
Not ideal and you would manually have to enter the donation stuff separately.
You could also add options for donation allocations or a text box.
It can sort of be done, but it is sloppy and does not work with the donation subsystem. We did it for an event. We created the registration form. We then added a series of payment check boxes so the amounts get added in.
So
Checkbox $25
Checkbox $50
Checkbox $75
Checkbox $100
Checkbox $200
etc.
So if a person wanted to donate say $150 they would check the $100 and $50 boxes.
I have not tried this on the membership form, but you should be able to use the field selection type "extra charges - multiple choice" to effect this.
Not ideal and you would manually have to enter the donation stuff separately.
You could also add options for donation allocations or a text box.