Multiple keymaps for a minor mode

[Tim Johnson <tim@akwebsoft.com>]

Using GNU Emacs 26.1 on ubuntu

;; I use the following code to establish a minor mode

(defvar tj-mode-map (make-sparse-keymap)
   "Keymap for `tj-mode'.")

;;;###autoload
(define-minor-mode tj-minor-mode
   "This minor mode enables my key settings to override conflicting modes."
   :init-value t
   :lighter " -tj-"
   :keymap tj-mode-map)

;;;###autoload
(define-globalized-minor-mode global-tj-minor-mode tj-minor-mode 
tj-minor-mode)

(add-to-list 'emulation-mode-map-alists `((tj-minor-mode . ,tj-mode-map)))
;; End code

I wish to separate `tj-mode-map into a number of individual mode maps 
that are configured by category. This would give me the advantage of 
using a function called

which-key--create-buffer-and-show  from the which-key package to 
implement a menu showing commands bound to keys by functionality or 
category.

the :keymap member of define-mode-map is what binds the keymap to the mode.

Can I use multiple :keymap entries, one for each keymap or must I define 
a minor mode for each of my custom keymaps?

Certainly the latter is doable, but I like to save keystrokes :)

thanks

-- 
Tim
tj49.com