Added info about the remaining time notification

Why is this change being made?

It is to let the prospect shadows know that they are are encouraged to notify about the remaining time during the not-group meetings.

Author Checklist

• Provided a concise title for the MR
• Added a description to this MR explaining the reasons for the proposed change, per say-why-not-just-what
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• Assign reviewers for this change to the correct DRI(s)
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  • If this is a change that directly impacts the majority of global team members, it should be a candidate for #company-fyi. Please work with internal communications and check the handbook for examples.

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