The Stamps panel is called from the Panel bar by the following tool
If you do not see this tool, right-click in an empty area of the Panel bar and select it.
To put a stamp onto your PDF
Double-click a stamp on the Stamps panel, or
Click the Options button at the top of the Stamps panel and choose Insert from the drop-down menu.
The stamp appears with its original sizing. Move it to the desired location.
To put a stamp at a defined place in your PDF file
Select a stamp and drag it from the Stamps panel to desired place on the page, or
Select a stamp and click at the desired location on the page.
The stamp appears with its original sizing.
To put a custom sized stamp at any place in your PDF file
Select a stamp in the Stamps panel; the stamp cursor appears; use it to draw a rectangle of the required size and location. The stamp is resized to fit the rectangle.
You can also use the Select Area tool to define an area, its shortcut menu offers Create Stamp, so you can construct a stamp and have it placed in the defined area.
You can add stamps you create from any supported image file using the Create button in the Stamps panel. You can categorize your stamp collection.
To set stamp properties
Click the Hand tool at the top of the Panel bar and right-click a stamp in the Document window for a shortcut menu with the following commands: Set Status, Reply, Delete, Properties and Set Appearance as Default Properties. Properties lets you change the stamp’s author, subject or opacity or view its revision history; choose Protected to prevent further changes to the stamp.
To move, copy or resize a stamp
Select the Hand tool or the Select tool at the top of the Panel bar Click the stamp to drag it to a new location. Press Ctrl as you drag to copy it. Drag the corner of a stamp’s bounding rectangle to resize it.
To edit a stamp
Choose the Select tool at the top of the Panel bar and right-click in the stamp. Use the Edit command to Cut, Copy, Paste or Delete the stamp or Select all to select all objects on the page.
To align or arrange a set of stamps
Use the Select tool. Click with Ctrl in a number of stamps. Right-click for a shortcut menu to align, center or distribute the stamps or to unify their sizes. Click Properties to change the properties of all selected stamps at once.
To place a stamp on all pages of a document
Place the stamp on a page, right-click on it and choose Apply to all pages. The chosen stamp will appear on all pages with the same size and location as the original.
Notes
All stamps in a document can be transformed from annotations to document objects by the command Flatten Document (Advanced Processing > Process) or deleted by Remove Document Elements (in the Security ribbon) when the category Comments is selected.
Handwritten signatures can be placed in a document from the Security ribbon, these are handled as stamps; they do not appear in the Stamps panel but they do appear in the Comments panel and can be commented, reviewed and so on.