the tasks he performs and the actions he takes aren't all listed in the White House schedule press releases
You seem to know; fill us in.
Some examples of others noting the part time president
Axios reported that aides say it’s tough to schedule “public or private events” with Biden at certain times of day — namely weekends, mornings, and evenings. In fact, the report adds, most of Biden’s public events happen between 10 a.m. and 4 p.m.
Aides have compared Biden to an aging monarch protected by courtiers at all costs.
“President Biden does nothing at 9 a.m.,” former White House press secretary-turned-MSNBC host Jen Psaki
Around noon on Monday, October 10th shortly after the war broke out, the Biden administration officially called a "lid" on public-facing appearances for the day,
The NY Times from 6/23.
New York Times takes a deep dive into the effects of Joe Biden’s advanced age, and notes that the window of his public appearances is getting smaller over time. Unease about Mr. Biden’s age suffuses Democratic circles. One prominent Wall Street Democrat, who like others spoke on the condition of anonymity to avoid offending the White House, noted that among party donors it was all anyone was talking about. At a small dinner earlier this year of former Democratic senators and governors, all of them in Mr. Biden’s generation, everyone at the table agreed he was too old to run again. Local leaders often call the White House to inquire about his health.
When he does appear he rarely takes questions,