infopath form - prevent to create new items if they pick week ending in the current week and after Wednesday 12PM

Question

is there a way to prevent new sp list items to be created/changed or using infopath forms to prevent the following
we want people to create their no of hours worked as overtime for pre-approval for current week or future weeks

so for current week they can do but only if before Wednesday 12PM
(week starts on Saturday before current week - so from Sunday to Friday)
for future weeks, time doesn't matter.
Ty

Answer 1

SharePoint Online or InfoPath cannot restrict item creation in a time range. By default, all authenticated users with have access to the list and be able to create items as long as they have enough privilege (permission).

Here are a few workarounds for this request:

1. Use Power Automate to change user permission/list permission/item-level permission on schedule.
   Reference: Setting sharepoint item list permissions with flow.
2. Disable access to SharePoint Online service using PowerShell and schedule the PowerShell Script using Task Scheduler.
   References: Disable access to Microsoft 365 services with PowerShell. / How to Schedule PowerShell Script using Task Scheduler.
3. Configure ADFS for Office 365 to restrict access hours.

Here is a UserVoice post on similar request you can vote and find related discussion: Ability to limit user logon hours.

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