One uncompleted option in Time Tracker can be set on the bottom of Group settings page. It controls whether or not multiple uncompleted records are allowed for users. An uncompleted entry is an entry that has only start time but no finish time. You create such entries, for example, when using the Puncher plugin or Android app. One uncompleted option in Group settings
When One uncompleted checkbox is set, only one not finished entry is allowed. Creating new ones is prohibited. Time Tracker checks the setting during creation of new entries and displays the Uncompleted entry already exists error. Uncompleted entry already exists error
When One uncompleted is not set, users may have an unlimited number of uncompleted entries. An example screenshot below shows 3 uncompleted time records. Multiple uncompleted records in Time Tracker Time Tracker User Guide
