Estimate the rounding of the price of the process product under the conditions

Need an assessment https://crm.ohrana.ua/, partially assessed but need to be comprehensively reassessed. You need a process action that will round the price in the process. It needs: 1. be able to specify under what condition the action should be triggered, for this you need to select the field and what value it corresponds to (selection from the fields of products and process products), for products whose conditions match the action is triggered and rounds the price 2. be able to specify rounding to what number of decimal places 3. the action should be triggered when saving, or better when adding a product 4. additional setting is needed (checkbox for example), round off according to VAT rules, when filling in this checkbox, the price should be considered as Process Product Price / 6, round the result and multiply back by 6, for example, the price of the product in the process 43.27 / 6 \u003d 7.21167, rounded up to 7.21*6=43.26, total 43.26 was written in the price field. This paragr