Member name	Value	Description
CustomField	0	Represents an enterprise custom field.
Driver	1	Represents a portfolio driver.
DriverPrioritization	2	Represents a portfolio prioritization.
Engagement	3	Represents a resource engagement.
EnterpriseCalendar	4	Represents a enterprise resource calendar.
EnterpriseProjectType	5	Represents an enterprise project type.
FiscalPeriod	6	Represents a fiscal period.
GanttChartFormat	7	Represents a gantt chart format.
GroupingFormat	8	Represents a view grouping format.
LineClassification	9	Represents a timesheet line classification.
LookupTable	10	Represents a enterprise lookup table.
PermissionTemplate	11	Represents a security permission template.
PortfolioAnalysis	12	Represents a portfolio analysis.
Project	13	Represents a project.
QueueJob	14	Represents a queue job.
QuickLaunch	15	Represents a quick launch item.
Reporting	16	Represents the reporting endpoint.
Resource	17	Represents an enterprise resource.
ResourcePlan	18	Represents a resource plan associated with A project.
SecurityCategory	19	Represents a security category.
SecurityGroup	20	Represents a security group.
Setting	21	Represents a Project Web App setting
Statusing	22	Represents a task status update.
StatusReport	23	Represents a status report.
TimeReportingPeriod	24	Represents a period of time for a timesheet
Timesheet	25	Represents a timesheet entity.
TimesheetAuditLog	26	Represents a timesheetsheet audit log.
TimesheetManager	27	Represents the manager of a timehseet.
UserDelegate	28	Represents a user delegation for another user.
View	29	Represents a view definition.
WorkflowPhase	30	Represents a phase in a workflow.
WorkflowStage	31	Represents a stage in a workflow.

Reference

Aspose.Email.Clients.Activity Namespace