Delay Days Calculation

I Have create a planned day(Formula Type) to Calculate base on start date and End date , i have also created a delay day(Formula Type) to calculate base on End Date and Completion Date

I have problem that I have issue that I am getting the value include weekend and holidays also in both Field but I need only days value of my working Hours (mon-sat) but doesn't count sunday's in it.

Planned Day function : DATETIME_DIFF({END DATE},{START DATE},'DAYS')

Delay Date Function : DATETIME_DIFF({COMPLETION DATE},{END DATE},'DAYS')

Anyone Can Solve This

Zoho Desk Resources

Desk Community Learning Series
Digest
Functions
Meetups
Kbase
Resources
Glossary
Desk Marketplace
MVP Corner
Word of the Day

Topic Participants
demo4strateworks
Monica P

Sticky Posts
Time Log Reminder
Tracking the time spent on tasks and issues is one of the most important functions of a timesheet. However, users may forget to update the time logs because they have their own goals to achieve. But, time logs must be updated at regular intervals to keep
Enhanced Collaboration and Global Web Tabs
Hello Users, We are rolling out two key enhancements in Zoho Projects that will be part of our November release. Here’s what to expect: 1. Collaboration Section in the Left Navigation Panel What’s new? All communication and interactive tools will be grouped
Tip 37: Time Log Restriction in Zoho Projects
Timesheet in Zoho Projects helps you big time in entering log hours for the tasks and issues and approving them. Now, with the new Time Log Restriction option, you can set daily and weekly log hour limits. You can restrict users from entering extra log hours than the permissible limit. The limits are restricted to 24 hours per day and 168 hours per week by default based on business hours. To customize, navigate to Task & Timesheet settings under Portal Configuration in Zoho Projects setup and enable
Rename Task Module To Suit Your Project
Task Module in Zoho Projects gives a comprehensive view of all the action items, known as Tasks, across all projects. However, different industries may use alternative terminology for similar processes, which might not always be recognised when labelled
Project Billing with the Staff Hours Method in Zoho Projects
The Staff Hours Billing Method in Zoho Projects allows you to bill your clients based on the actual time spent by each team member on a project, at the rate set for each user. This is useful for projects where different skill sets are needed and service