In the Channel Box you can set a key for a single object attribute, or for all the keyable attributes.
For example, click Translate X.
For example, enter 10 and press Enter.
or
This sets the key for the object attribute value you specified.
or
This sets the key for all the object attribute values displayed in the Channel Box.
You can key the same attribute value for two or more objects. Select the objects, click the frame, enter the value in the text box, then select Channels > Key Selected.
You can also key multiple attribute values for multiple objects. Follow the instructions in the previous paragraph, only select several attribute text boxes using Ctrl- or Shift-click before typing the numerical entry.