Installation & Validation is via our Free Extension Installer
For detailed guide how to validate and install our modules visit guide below:
*Guide apply for Vtiger 7.x and Vtiger 6.x versions
*Calculate Fields have same installation package for Vtiger 7.x & 6.x
Notice: the calculations provided for Calculated Fields are done automatically based on scheduler settings and cannot be initiated manually. Please check the scheduler settings, i.e. check whether the status for Calculate Fields is “Active”. If not, please change it, as well as define frequency as shown in the picture below:
(Frequency time is up to you, but we don’t recommend setting it to less than 15 minutes.)

Since August 2021 we also support AfterSave calculations
This is included in version 4.5 and higher
What is a AfterSave calculation?
The the calculations will be made immediately after saving the record.
For example:
We have an Organization where in the Annual Revenue field, there should be a SUM of all Paid Invoices assigned to the given organization.
So now when you create or edit any Invoice related to this Organization, the Annual Revenue will be instantly recalculated after you press Save button when editing or creating an Invoice.