Downtime Activities

Downtime activities are tasks that usually take a workweek (5 days) or longer to perform. These tasks can include buying or creating magic items, pulling off crimes, and working at a job. A character selects a downtime activity from among those available and pays the cost of that activity in time and money. You, as DM, then follow the rules for the activity to resolve it, informing the player of the results and any complications that ensue.
Consider handling downtime away from the game table. For example, you could have the players pick their downtime activities at the end of a session, and then communicate about them by email or text, until you next see them in person.

Resolving Activities

The description of each activity tells you how to resolve it. Many activities require an ability check, so be sure to note the character's relevant ability modifiers. Follow the steps in the activity, and determine the results.
Most downtime activities require a workweek (5 days) to complete. Some activities require days, weeks (7 days), or months (30 days). A character must spend at least 8 hours of each day engaged in the downtime activity for that day to count toward the activity's completion.
The days of an activity don't need to be consecutive; you can spread them over a longer period of time than is required for the activity. But that period of time should be no more than twice as long as the required time; otherwise you should introduce extra complications (see below) and possibly double the activity's costs to represent the inefficiency of the character's progress.

Complications

The description of each activity includes a discussion of complications you can throw at the characters. The consequences of a complication might spawn entire adventures, introduce NPCs to vex the party, or give the characters headaches or advantages in any number of other ways.
Each of these sections has a table that offers possible complications. You can roll to determine a complication randomly, pick one from the table, or devise one of your own, and then share it with the player.

Example Downtime Activities

The following activities are suitable for any character who can afford to pursue them. As DM, you have the final say on which activities are available to the characters. The activities you allow might depend on the nature of the area where the characters are located. For example, you might disallow the creation of magic items or decide that the characters are in a town that is too isolated from major markets for them to buy such items.