You can use the Report Manager (print function) to create a report of the due activities of internal persons either using the “My Data” form, on the form of an internal person, or from the Entry Portal (print button and context menu).
In this report, you can specify the activity type and maturity as search conditions. Alternatively, you can also specify the period of time to be taken account of (Today, Today + Tomorrow, This week, This week + Next week, This month, This month + Next month). This is useful if you are close to the end of a period.