Do I need to know how to program to use the NNFX Algo Tester?

No. No programming knowledge is required to use the NNFX Algo Tester, so there is no need to touch a line of code.

However, note that it is necessary to follow a specific format to configure custom indicators (i.e. any indicator not included in the software). This configuration is relatively straightforward, but its format depends on the type of indicator you are using.
For example, to configure a Two Lines Cross indicator, you must first enter the input values, then the name of the indicator and then its buffers, in this order and using the correct punctuation.

The help section contains detailed information on how to configure the various types of indicator, but if you get stuck you can always contact support directly; we will be happy to help you.